Product classification
ESR series SF6 gas insulated ring main unit
Widely used in ring network distribution systems such as switch stations and substations, infrastructure construction projects, industries, manufacturing, transportation enterprises such as ports, railways, and land transport, public construction projects in industrial zones, development zones, and business districts, as well as in the real estate industry and residential community construction in the construction industry.
- Description
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Product Features:
▪ Miniaturized, fully enclosed, fully insulated;
▪ Anti-condensation, dirt-resistant, maintenance-free;
▪ The circuit breaker scheme has reclosing function: O-0.3s-CO-180s-CO;
▪ Uses a mechanical linkage mechanism for more reliable five-proof interlocking;
▪ Side expansion, aesthetically pleasing, easy to install;
▪ The surface of the mechanism is treated with advanced special anti-corrosion treatment; ▪ Uses silent gear transmission;
▪ The transmission parts of the mechanism use oil-free lubrication;
▪ Provides passive protection, intelligent measurement and control, diagnostics, and intelligent distribution network solutions.
Applications
Widely used in ring network distribution systems such as switch stations, infrastructure construction projects, industry, manufacturing, transportation enterprises such as ports, railways, and land transport, public construction projects such as industrial zones, development zones, and business districts, and the construction industry such as real estate and residential community construction.
Main Technical Parameters:
Rated Voltage: 12kV, 24KV, 40.5kV
Rated Current: 630A, 1250A (circuit breaker cabinet), 125A (fuse cabinet)
Rated Short-Circuit Breaking Current: 20kA, 25kA
Mechanical Life: Vacuum circuit breaker ≥ 20000 times, load switch ≥ 5000 times, isolating switch and grounding switch ≥ 3000 times
Breaking Times (circuit breaker cabinet): 30 times
Active Breaking Current Times (load switch cabinet): 200 times
SF6 Annual Leakage Rate: ≤0.01%/year
Internal Arc Test: 1s (cable chamber, gas chamber)
Rated Transfer Current: 1750A
Gas Chamber Protection Level: IP67
Operating Environment: Suitable for high altitudes of 4000 meters, low temperature areas down to -45 degrees.
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